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1 Dorsal fins are found on the back of the fish. 2  There may be up to three of them. 3  The fish uses this fin for balance in the water and sudden movements. 4  Caudal fins are also known as tail fins.5  This is what we refer to as the fish's tail. 6  Anal fins are on the ventral (bottom) surface of the fish, behind the anus. Dorsal fins are found on the back of the fish. 2  There may be up to three of them. 3  The fish uses this fin for balance in the water and sudden movements. 4  Caudal fins are also known as tail fins.
the perch IS dark olive green dorsally, with sides ranging from yellow to orange ventrally. The ventral fins are orange and red in color and become brilliant during the breeding season. The body is torpedo shaped (fusiform). Perch are a commercially important species and are marketed fresh or frozen; and eaten pan-fried, broiled or baked. External Dissection 1. Identify the different kinds of fins: caudal fin, anal fins, pelvic fins, pectoral fins, and dorsal fins. The perch is characterized by a dorsal fin which is